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Roy Belding
Roy Belding, ASE Certified Technician
Category: GM
Satisfied Customers: 4656
Experience:  Master ASE since 1980
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I have a p0507 - Idle on my 2008 chevy Silverado 1500
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Customer Question

I have a p0507 - Idle on my 2008 chevy Silverado 1500
JA: Thanks. Can you give me any more details about your issue?
Customer: I clean the throttle body with crc and it Idle to hi
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Submitted: 9 months ago.
Category: GM
Expert:  Roy Belding replied 9 months ago.

good evening my name is ***** ***** I will assist

did you use crc throttle body cleaner or just the lubricant??

Roy

Customer: replied 9 months ago.
just the CRC throttle body cleaner
Expert:  Roy Belding replied 9 months ago.

ok, did you scrub the plate area and the body and be sure that the plate moved freely ??

Roy

Customer: replied 9 months ago.
I need to know how to Idle my 2008 chevy Silverado 1500 4.8l Ls Down? Relearn it.
Customer: replied 9 months ago.
I do not see the Answer
Expert:  Roy Belding replied 9 months ago.

do you have a scan tool???

Roy

Expert:  Roy Belding replied 9 months ago.

did you clean it the way I asked???

Expert:  Roy Belding replied 9 months ago.

I did not see you request the re learn. here it is

Throttle Learn

With Scan Tool - Reset Procedure

  1. Ignition ON, engine OFF, with a scan tool, perform the Idle Learn Reset in Module Setup.
  2. Start the engine, monitor the TB Idle Airflow Compensation parameter. The TB Idle Airflow Compensation value should equal 0 percent and the engine should be idling at a normal idle speed.
  3. Clear the DTCs and return to the diagnostic that referred you here.

Without Scan Tool - Learn Procedure

Important: Do NOT perform this procedure if DTCs are set. Refer to Diagnostic Trouble Code (DTC) List - Vehicle. See: A L L Diagnostic Trouble Codes ( DTC )\Testing and Inspection\Diagnostic Trouble Code Descriptions

  1. Start and idle the engine in PARK for 3 minutes.
  2. With a scan tool, monitor desired and actual RPM.
  3. The ECM will start to learn the new idle cells and Desired RPM should start to decrease.
  4. Ignition OFF for 60 seconds.
  5. Start and idle the engine in PARK for 3 minutes.
  6. After the 3 minute run time the engine should be idling normal.

Important: During the drive cycle the check engine light may come on with idle speed DTCs. If idle speed codes are set, clear codes so the ECM can continue to learn.

Expert:  Roy Belding replied 9 months ago.

how are you making out

Expert:  Roy Belding replied 9 months ago.

please dont forget to rate me as it is the only way I get paid for my efforts

Roy

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